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Finding the Fourth Proportional to 86,582.72, 119,478.84 and 48,339.76

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Solution

The fourth proportional to 86,582.72, 119,478.84 and 48,339.76 is: 66,705.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,582.72 : 119,478.84 = 48,339.76 : x
  2. Step 2: Convert to fraction form
    86,582.72/119,478.84 = 48,339.76/x
  3. Step 3: Cross multiply
    86,582.72x = 119,478.84 × 48,339.76
  4. Step 4: Simplify right side
    86,582.72x = 5,775,578,450.68
  5. Step 5: Solve for x
    x = 5,775,578,450.68/86,582.72
  6. Step 6: Final answer
    x = 66,705.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.